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Swift Optics 820 ED Audubon 8.5x44 - binoculars' review

Swift Optics 820 ED Audubon 8.5x44 - binoculars' review
9 November
2010 15:39
Arkadiusz Olech

The porro prismatic Swift Audubon ED 8.5x44 model includes low dispersion ED glass in the objective lens which task is to fight against the chromatic and spherical aberration and raising the contrast level by 5-10% compared to normal binoculars. Read more >>>